Window screen



Jun@ n2, 11923.

J. H. DE SMIDT WINDOW SCREEN 1922 A2 sheets-smet u 1 June'm, w23. l Y J. H. LDE sMlDT WINDOW SCREEN Filed June' 22, 1922 2 sheetssheet 2 lo able others skilled in the art w ated rollers and arranged to be nal edge a roller very evenliy atented June 12, 1923. i

JOHN H. DE SMIDT, 0F MINNEAPOLIS, MINNESOTA.

WINDOW SCREEN.

Application led .Tune 22, 1922. Serial No. 570,243.

To all 'whom t may concern.:

Be it known that I, JOHN H. DE SMIDT, a citizen of the United States, residing at Minneapolis, in the county of Hennepin y e and State ofMinnesota, have invented certain new and useful Improvements in Window Screens; and I do hereby declare the following `to be a full, clear, and exact description of the invention, such as will ento which it appertains to make and use the same.

My present invention relates to window screens and more particularly to screens of the type that are mounted on s ring-acturawn by a Window, during its opening movement, across the opening thereof. f

One of the objects of the invention is the reinforcing and stiffening of the longitudiportions of the fabric mesh screen by applym thereto paint or other pliable material, w ich perm1ts the cutting away of the selvage edges of the screen in trimming the same to lit windows of different widths.

' 25 This treatment of the longitudinal edge portions of the screen prevents the same from unravelling ortearing and does not perceptibly lncrease the thickness thereof, which permits the screen to be wound onto and in compact form. The stiflening of t e longitudinal edges of a fabric screen greatly assists in causing the same to remain very close to a window frame and thereby form tight joints between the screen and said frame.

To the above end, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referring to the drawings: v Fig. 1 is a view in vertical section of upper and lower window sashes mounted in a Aframe to which the invention is applied;

Fig.,2 is a perspective vie-w of the invention, with some parts broken away and secc@ tioned, and also illustrating a portion of the @is with lower window sash;

Fi 3 is a detail view the line 3 3 of Fig. 1;

Fig. 4 is a view corresponding to Fig. 1 the exception that some parts have in section taken on been broken away, other arts removed, and showing the lower sash c osed;

1g. 5 is a view in central vertical sec t1on showing the lower window sash open and the screen detached from the frame and wound completely into the casing; and Flg. 6 is a fragmentary perspective view of the window frame, and one of the joint strips attached thereto. l

T he numeral 7 indicates a window frame having an inner channel 8 and an outer channel 9, in which are mounted vertically slldlng lower and upper window sashes 10 and 11, respectively. A fabric mesh screen 12 is wound onto a spring-actuated roller 13 mounted in a casing 14. This roller 13 is preferably of the type commonly used for mounting window shades and is equipped with-trunnions 15 and 16 mounted in seats in the ends of the casing 14. The trunnion 15 is flattened and the seat therefor is correspondingly formed to hold said trunnion agamst rotation, for a well known purpose.

The casin 14 is attached, as shown, to the lower rail of the lower sash 10 and, at its front, is segmental in cross section and open at its back, which is closed by said lower rail. The to of the casing 14 extends tan entially inward and then upward to affor a flange 17 through which screws 18 are inserted to detachably connect said casing to the window sash. The bottom of the casing 14 terminates short of the back thereof to leave an entrance passageway 19 through which the screen 12 moves into and out of said casing. 'To fit the casing 14 to VV,win-

dows of different widths, the same is made in two sections and the inner end portions thereof overlap for slidin movement, the one upon the other. To ho d the sections of thecasing 14 against radial separation, in respect to the roller 13, the flange 17 and bottom of the outer casing section,fat the entrance passageway 19, are formed with channels 1n which the iiange and bottom portion of the other casing section are slidabl mounted.

he two sections of the iange 1'( are provided with longitudinally extended slots 20 arranged to be successively brought into coincident relation to receive therethrough a screw 21, which further connects the two sections of the casing 14 and secures the same to the sash. Interposed between the flange l? and sash A10 are shims 22- held in 110 29 are engaged tion of the screen 12 to the position by the screws 18 space the end outturned flanges 24 which bear upon the` stops 25 between the sashes 10 and 11 and are secured thereto by screws 26.l

On the lower edge of the screen 12 is a stiifening bar 27 that is U-shaped in crosssection to receive said screen between its flanges. These ilanges of the stiffening bar 27 are pressed together to clamp the screen 12 therebetween. The outer end portions of the outer ange of the stiii'ening bar 27 are turned outward at their upper end lportions to afford outstanding stop flanges 28 ar.- ranged to engage the bottom of the casing 14 to prevent j ing drawn completely into the casing 14 under the action of the spring roller 15 when said stilening bar is detached from the frame 7.

To detachably secure the lower edge porwindow frame, pins 29 are extended through the flanges 24 and anchored in the stops'25. These pins by the flanges 28 and hold the lower edge portion of the stii'ening bar 27 against the windowsill 30. Preferably, as shown in Fi 2, the flanges 28 are transversely cut to ivide the same int-o a multiplicity of sections, the purpose of which will presently appear. The stiifening bar 27 is further ksecured to the frame 7 by ya hook 31 anchored in the window sill 30 and interlocked with an edge 32 in said stiifening' bar at the longitudinal'center thereof. Y

The longitudinal edge portions of the screen 12 are painted or otherwise treated with a pliable material, as indicated at 33, whichfills the mesh therein and reinforces and stiffens said edge ortions. 4 The urpose of thus treating thel ongitudinal e ge portions 33 of the screen 12 is` to permit the same to be trimmed, so that the screen 12 ma be'fitted to windows of different widths, an prevents the samefrom unravelling or tearing after the selvage has been cutaway. This treatment of the longitudinal edge portions 33 also stifens they same and causes `said edge portions to lieclose to the joint strips 23, which are overlapped thereby, as best'shown in Fig. 3, to orm'tight joints. The filling of the mesh in the outer longitudinal edge portions 33, with paint'or other pliable material, does not perceptibly interially` increase crease the thickness of the screen 12, so that the same will wind onto lthe roller 13 very evenly and in compact form.' To hem the longitudinal edges of the fabric screen 12, to prevent unrave ling or tearing, would the thickness of the screen 12, at its longitudinal ed portions, and when wound` onto the rol er 13, would be uneven and very bulky.

the stiiening bar 27 from be The purpose of transversely dividing the flange 28 is to permit one or more sections thereof to be broken off by a pair of pliers or other suitable tool, to facilitate the trimming of the longitudinal ed es of the screen 12 nd the ends of the sti ening bar 27 to fit windows of different widths. f

When the lower sash 10 is closed, the screen 12 will be entirely enclosed in the casing 14 and protected vfrom the weather. When the sash 10 is open in various different positions, the opening of the'window frame left by said sash will be closed by the screen 12 to exclude flies, mosquitoes, and various different insects, and dust and dirt, and2 at the same time, permit the desired ventilation. 'When the screen is not required, the anchored free end thereof may be released from the window frame by detaching the hook 31 fromthe eye 32 and drawing the stiffening bar awa from-the pins 29 suiiciently to (permit fol ing of thev screen 12 to clear sai pins.

yWhile the casing is shown attached to a lower sash and the screen anchored to a window sill, it is, of course, understood that a second casing could be attached to-the upper sash and the screen anchored tothe to of the window frame so that both win ows could be opened, and the openings in the window frame left thereby closed by the respective screens.

l Obviously, the spring roller keeps the screen taut and when the lower'sash 1s lowered the screen automatically is taken up and wound on the roller. The stifl'enng bar 27, when the screen is wound entirely within the casing, affords a flashing to direct rain awa from the casing.

at I claim is; 1. A fabric mesh ed e portions'painted to fill the mesh and sti en the same.

2. The combination with a rollerof a screen attached to the roller, and having its outer edge portions painted to ll the mesh and stiienthe same. K-

3. The combination with a spring-actuated roller applicable to a window sash, of a screen attached to said roller and adapted to screen having its outer be wound thereon, and means for attaching Y "the frame that are over apped by the stiened longitudinal edges of the screen.

5. The combination withr a casingA applicable to a window sash, of a spring-actuated roller mounted in the casing, a screen attached to said roller and adapted tobe wound thereon, means for attaching the fee im end of the screen to a frame in which said sash is slidably mounted, the longitudinal edge portions of the screen being painted to stifen the same, and joint strips on the frame that are overlapped by the stiffened longitudinal edges of the screen, the end p0rtions of the casing being spaced from the window sash to leave clearance for the joint strips between the window sash and casing.

6. The combination with a casing applicable to a window sash and having an entrance passageway, of a spring-actuated roller mounted in the casing, a screen attached to said roller and adapted to be wound thereon, a stiffening bar on the lfree end of the screen, said stifening bar having at its ends outstanding flanges, and means on the frame with which said flanges engage to anchor the free end of the screen to the frame, said flanges having a multiplicity of transverse divisions which permit sections thereof to be broken oli" and the stifening bar cut to vary the length of said sti'fening bar.

In testimony whereof I aiix my signature.

JOHN H. DE sMIDT. 

